You have been subscribed to a public bug by Robie Basak (racb):
We recently had a bind9 package upgrade take out DNS services for a
production cloud because named failed to come up after the postinst
restarted it. So obviously, a) our DNS shouldn't be a SPOF and b) we
shouldn't let our config files get into a state where named refuses to
start, but, with that said, the bind9 postinst could be more robust
against this kind of failure mode.
Specifically it could run named-checkconf against /etc/bind/named.conf
and, if it returns 1, either:
a) skip the restart and scream loudly to warn the admin
or
b) abort the package install by erroring out of the postinst at that
point
** Affects: bind9 (Ubuntu)
Importance: Medium
Status: Triaged
** Tags: needs-upstream-report
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postinst should validate config before restarting bind
https://bugs.launchpad.net/bugs/1492212
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